1. MEIROVITCH, L.: “Analytical Methods in Vibrations”, MacMillan Company, 1967.
2. TIMOSHENKO, S.: “Vibration Problems in Engineering”, 3rd. ed., D. Van Nostrand Co., Princeton, N.J., 1955.
3. DIMENTBERG, F.M.: “Flexural Vibrations of Rotating Shafts”, Butterworths, London, 1961.
4. BISHOP, R.E.D.: “Vibration of Rotating Shafts”, Journal of Mechanical Engineering Science, Vol. 1, No. 1, 1959, pp. 50–65.
5. GLADWELL, G.M.L. and BISHOP, R.E.D.: “The Vibration of Rotating Shafts Supported in Flexible Bearings”, Journal of Mechanical Engineering Science, Vol. 1, No. 3, 1959, pp. 195–206.